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30×40 House Plan — Free AI Generator
A 30 × 40 ft plot — 9.1 × 12.2 m, 1,200 sq ft — is one of the most common residential sizes anywhere plots are measured in feet, and it is a genuinely comfortable one. There is room for a proper living space, a kitchen that two people can stand in, and bedrooms that take a real bed and a wardrobe without the door hitting either.
Describe your household to HousePlanAI — how many bedrooms, whether you want a separate dining area, which way the road runs — and it drafts a plan for the 30 × 40 footprint with rooms sized and connected, doors and windows placed, and the plot's boundary wall drawn. Then you edit it. Every wall can move, every room can be renamed or resized, and you can add a second floor with a staircase when you want one.
What fits on a 30 × 40 ft plot
| What you want | Floors | How it works out |
|---|---|---|
| 2 bedrooms, living, dining, kitchen, 2 bathrooms | Single floor | The most comfortable single-floor layout at this size. |
| 3 bedrooms, living, kitchen, 2 bathrooms | Single floor | Fits, but the third bedroom and the living room both give up some space. |
| 3–4 bedrooms, plus a separate family area | Two floors | Roomy — the usual choice when a growing family plans ahead. |
How much of those 1,200 sq ft you can actually build on depends on the setback and coverage rules in your area, which vary widely and which HousePlanAI does not check. Look them up before you commit to a footprint; the plan is easy to shrink once you know the number.
If you are unsure between one floor and two, generate both. Each takes about a minute, and seeing the two-storey version in the 3D walkthrough — standing in the upstairs hallway, looking down the stair — tends to settle the question faster than comparing two drawings does.
Draw your 30 × 40 ft plan now
The plot size is already filled in. Answer a few questions about how you live and HousePlanAI drafts a plan you can edit, walk through in 3D and download as a PDF. It is free, and you do not need an account.
Start a 30 × 40 ft planQuestions people ask
How many square feet is a 30×40 plot?
A 30 × 40 ft plot is 1,200 sq ft, or about 111 m². The area you can build on is smaller than that, because most places require you to leave open space around the house — check your local rules.
Is HousePlanAI free?
Yes — HousePlanAI is free to use right now. You can generate a plan, edit every part of it, walk through it in 3D and download a PDF plan sheet without paying anything. Paid plans may arrive later, but nothing you can do today is behind a paywall.
Can I edit the floor plan the AI creates?
Yes. The AI's plan is a starting point, not a finished answer. Every wall, door, window and room is yours to move, resize, delete or rename, and the dimensions and areas update as you go.
Can I see my house in 3D?
Yes. Any plan can be viewed as a 3D model with walls, floors, doors, windows and furniture in place. You can take a guided walk in from the street or move through the rooms yourself, and every edit you make in 2D shows up in 3D straight away.
What plot sizes does it support?
Any size. Common sizes are one tap away in both feet and metres — 20×30, 30×40, 30×50 and 40×60 ft, or 9×12 and 10×15 m — and you can type your own width and depth instead. Switch between feet and metres whenever you like.
Can I download my plan?
Yes. You can download an A3 PDF plan sheet with dimensions, room areas and a title block, or export the drawing as an image. You can also copy a share link that opens the plan in anyone's browser — no account needed on their side.
Do I need an account?
No. Open the app and start describing your house straight away — no sign-up, no email, no card. An account is only useful if you want your plans saved to the cloud so you can pick them up on another device.